1440263164 has 12 divisors (see below), whose sum is σ = 2526942600. Its totient is φ = 718279568.

The previous prime is 1440263119. The next prime is 1440263191. The reversal of 1440263164 is 4613620441.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461254 + ... + 464365.

It is an arithmetic number, because the mean of its divisors is an integer number (210578550).

Almost surely, 2^1440263164 is an apocalyptic number.

It is an amenable number.

1440263164 is a deficient number, since it is larger than the sum of its proper divisors (1086679436).

1440263164 is a wasteful number, since it uses less digits than its factorization.

1440263164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926012 (or 926010 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1440263164 is about 37950.7992537707. The cubic root of 1440263164 is about 1129.3120212464.

The spelling of 1440263164 in words is "one billion, four hundred forty million, two hundred sixty-three thousand, one hundred sixty-four".